/usr/bin/devdump: Usage: /usr/bin/devdump [options] [image]
Options:
	-help, -h	Print this help
	-version	Print version info and exit
	-i filename	Filename to read ISO-9660 image from
	dev=target	SCSI target to use as CD/DVD-Recorder

If neither -i nor dev= are speficied, <image> is needed.